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[alpine-devel] Kernel parameter for Xen

Florian Heigl
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Hi,

would it be possible to enable a kernel option for Xen?
It's probably called XEN_BALLOON_MEMORY_HOTPLUG, looking at the config I
see it is apparently not enabled.

# CONFIG_MEMORY_HOTPLUG is not set

It appears that with that setting not defined one loses a chunk of dom0
memory that is otherwise available. In my case it seems to be around 1GB ;)

Florian


-- 
the purpose of libvirt is to provide an abstraction layer hiding all xen
features added since 2006 until they were finally understood and copied by
the kvm devs.
Natanael Copa
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On Thu, 22 Oct 2015 12:48:06 +0200
Florian Heigl <florian.heigl@gmail.com> wrote:

> Hi,
> 
> would it be possible to enable a kernel option for Xen?
> It's probably called XEN_BALLOON_MEMORY_HOTPLUG, looking at the config I
> see it is apparently not enabled.
> 
> # CONFIG_MEMORY_HOTPLUG is not set
> 
> It appears that with that setting not defined one loses a chunk of dom0
> memory that is otherwise available. In my case it seems to be around 1GB ;)
> 
> Florian
> 
> 

I suppose this is only needed for x86_64?

We need check if it works together with grsecurity and pax and what the
price for this option is. (slower? more memory consumption?)

-nc


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